Leiden University's Citizen Science Lab supports and organizes initiatives where anyone can get started with scientific data and research. This is how we enrich research with insights from the community, make science accessible to all, and tackle important local issues together.

For effective cancer immunotherapy by vaccination, co-delivery of tumour antigens and adjuvants to dendritic cells and subsequent activation of antigen-specific cytotoxic T cells (CTLs) is crucial. In this study, a synthetic long peptide (SLP) harbouring the model CTL epitope SIINFEKL was encapsulated…

Across many decision-making tasks, people and animals systematically repeat (or alternate) their choices - even when the choices they make are intrinsically uncorrelated. This phenomenon (also known as 'sequential effect' or 'choice hysteresis') has been known for at least a century, and may be a stable…

With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…

In the field of Western art music, improvisation has become a much discussed topic. In this interdisciplinary study I argue that in this context, improvisation is not to be seen as a quasi-autonomous skill or art form, but as an aspect of music-making in general.

Imprint of Action is the first large-scale study focussing entirely on sociocultural impact in archaeology and, as such, is explorative in nature; it provides unique insights into the workings of interaction and participation in archaeological events, and openly shares qualitative and quantitative research…

The small piano studios at the LAK are available to rent for practice purposes. You can either rent the studios per hour or get a subscription. There are Yamaha pianos available in the studio's, but you can also use the space to practice with your own instrument.

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In what way can teachers support and enlarge student engagement in a blended learning context?

Serge Rombouts is a physicist whose PhD thesis was about functional MRI (fMRI). This visualises activity in regions of the brain. The appealing images of glowing brain regions that emerge from the computer are the result of calculations. According to Rombouts, this isn’t proper artificial intelligence.…

This dissertation provides a formal description of the relationship between diatopic/diachronic micro-variation and phonologization through analysis of the phonetic/phonological properties of unstressed vowel reduction and vowel insertion in two Northern Italian dialects.

Can light-activatable ruthenium compounds be used as a more selective anticancer treatment?

Numerous beads and pendants of amber, jet and bone have been found in Dutch Neolithic and Bronze Age context, both in settlements and in graves. Because ornaments are personal items, they are closely linked with people’s identity.

People with a mild intellectual disability (MID) experience more loneliness than people without MID. In the COLLELO project, researchers from social and humanities disciplines collaborate with people with MID and their (in)formal networks to create an (online) learning community that aims to understand…

How can we, together international experts, define future needs of R+D contributions for innovations in the field of risk-based management of chemicals and products in a global perspective using alternative testing strategies to minimize animal tests?

Bernard Bernards examines constraints on innovation by focusing on cognitive uncertainty as a personal state that may affect innovative work behavior.

Self-censorship violates principles of a free society but few people want to take the role of the martyr.

Which adolescents are more at risk of developing social anxiety disorder later in life?

With a perspective-based approach to education, students' knowledge, skills and attitude are linked.

This book offers a linguistic anthropological analysis of multilingualism among the Matsigenka, Quechua, and Spanish languages on the coffee frontier of Southern Peru, set against the backdrop of economic transformation and deforestation in the world’s last great forest.

Impressions by Oene de Haan - PhD candidate at Utrecht University

If, as the works of John Cage suggest, there is “no such thing as silence,” then what are the markers that show us we are experiencing silence? - what are the performative cues during musical silence? - what are the auditory and visual bookends of silence in performance, i.e. what anticipates and…

Utilization of plant-originated products as new antibiotics

Identification and characterization of components of DNA repair pathways and their role in Agrobacterium T-DNA integration and repair of CRISPR/Cas induced DSBs.

Ongoing microwear analysis of the flint artefacts from the Funnelbeaker period suggests that flint had a pivotal role in the representation and structuration of the cosmological order of Funnelbeaker society.

The prehistory of communication metaphors

Thirteen Centuries of Creed, Conflict and Coexistence

Terms and conditions of enrolment, payment and cancellation for open registration language courses organised by the Academic Language Centre.

How can we stay fit during hybrid working?

Making sense of the world around us depends on the fundamental ability to parse the world into distinct objects and keep track of them. This process is defined as object individuation. Research indicates that it is not always easy for infants.

How is vegetative development regulated in plants and how does this affect a plant’s life history strategy?

A recent study on reintroduced tigers in Panna Tiger Reserve in India reveals that risks from tigers increased more because of human behaviour and people's livestock husbandry practices.

On 27 September 2017 a new book by Prof. Luuk van Middelaar appeared, entitled The new politics of Europe. The book is at the same time a front line account of Europe’s recent crisis years – from monetary turmoil to tensions around Ukraine, from refugee crisis to Brexit – and an analysis of the Union’s…

Competing Claims to an Idealized Past in Humanist Latin Poetry

How can teachers be motivated by their students’ data in making stepwise changes to their teaching practices?

This project, South American population history revisited: multidisciplinary perspectives on the Upper Amazon (SAPPHIRE), investigates population dynamics in western South America on the basis of traces in the geographical, genetic, archaeological, ethnological, and linguistic record.

Source: Mol Psychiatry (2015)

For thousands of years bloodlines have been held as virtually unassailable credentials for leadership, with supreme political power perceived as a family affair across the globe and throughout history. At the heart of royal dynasties, kings were inflated to superhuman proportions, yet their status came…

In this dissertation, a corpus of 595 seventeenth-century letters (mainly private ones) written between 1664 and 1672 is examined from a sociolinguistic perspective.

The 2004 Indian Ocean tsunami caused immense destruction and over 170,000 deaths in the Indonesian province of Aceh. The disaster spurred large-scale social and political changes in Aceh, including the intensified implementation of shari‘a law and an end to the long separatist conflict. After the Tsunami…

Cyber agent technology and intelligence agencies is a project that is commissioned by Tracks Inspector, a Dutch company that develops innovative software.

What are the determinants of the willingness to administer rewards for cooperation and punishments for non-cooperation, and how do they influence people’s sanctioning behavior?

This article investigates the causes and examines how differing public perceptions of the rule of law contribute to this trend.

How was FDR's image constructed—by himself and others—as such a powerful icon in American memory?

A master's degree in Psychology at Leiden University combines theoretical knowledge with academic and professional skills, making you an attractive candidate for many employers.

Promotores: S.J. Edixhoven, P.Parent

This special issue of the Journal of European Policy presents results from the research on the European Union Enlargement and its Integration Capacity. The Journal of European Public Policy is one of the leading journals in this field.

In my research I am concerned with the possibility of a politics of sexuality without reverting to identitarian conceptions of sexuality. In a reading of the work of the American author James Purdy, I propose to move towards a politicizing of the concept of narrative identity as developed by the French…

Influenza CD8(+) T-cell epitopes are conserved amongst influenza strains and can be recognized by influenza-specific cytotoxic T-cells (CTLs), which can rapidly clear infected cells. An influenza peptide vaccine that elicits these CTLs would therefore be an alternative to current influenza vaccines,…

This dissertation and the corresponding films and recordings presented here are an effort to distil an approach to performing the orchestral music of Johannes Brahms that is significantly different from what has hitherto been produced in the fields of both Mainstream Orchestral Performance Practice…